CVE-2026-54100

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-06-22. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.

CVSS v3
8.3
EG Score
8.3(high)
EPSS
8.0%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 30, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
Patch available. Sources: redhat.
redhat

2487953 – (CVE-2026-54100) CVE-2026-54100 windows-machine-config-operator: windows-machine-config-operator: SSH host key not verified enables credential theft

https://bugzilla.redhat.com/show_bug.cgi?id=2487953
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-54100

Vendor Advisories for CVE-2026-54100(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 36× in last 7d / 76× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 20:37 UTCEG score recompute
  2. 2026-07-06 20:37 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 08:08 UTCEG score recompute
  6. 2026-07-06 08:08 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 19:23 UTCEG score recompute
  10. 2026-07-05 19:23 UTCGHSA enrichment
  11. 2026-07-05 06:57 UTCEG score recompute
  12. 2026-07-05 06:57 UTCGHSA enrichment
  13. 2026-07-05 02:31 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 18:28 UTCEG score recompute
  16. 2026-07-04 18:27 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 06:00 UTCEG score recompute
  20. 2026-07-04 06:00 UTCGHSA enrichment
  21. 2026-07-03 17:32 UTCEG score recompute
  22. 2026-07-03 17:32 UTCGHSA enrichment
  23. 2026-07-03 05:05 UTCEG score recompute
  24. 2026-07-03 05:04 UTCGHSA enrichment
  25. 2026-07-02 16:36 UTCEG score recompute
Show 51 more
  1. 2026-07-02 16:36 UTCGHSA enrichment
  2. 2026-07-02 04:06 UTCEG score recompute
  3. 2026-07-02 04:06 UTCGHSA enrichment
  4. 2026-07-01 15:40 UTCEG score recompute
  5. 2026-07-01 15:40 UTCGHSA enrichment
  6. 2026-07-01 15:07 UTCEPSS rescore
  7. 2026-07-01 03:13 UTCEG score recompute
  8. 2026-07-01 03:13 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 14:46 UTCEG score recompute
  11. 2026-06-30 14:45 UTCGHSA enrichment
  12. 2026-06-30 02:17 UTCEG score recompute
  13. 2026-06-30 02:17 UTCGHSA enrichment
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-29 13:49 UTCEG score recompute
  17. 2026-06-29 13:49 UTCGHSA enrichment
  18. 2026-06-29 01:22 UTCEG score recompute
  19. 2026-06-29 01:22 UTCGHSA enrichment
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 12:55 UTCEG score recompute
  22. 2026-06-28 12:55 UTCGHSA enrichment
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-28 00:29 UTCEG score recompute
  26. 2026-06-28 00:29 UTCGHSA enrichment
  27. 2026-06-27 12:02 UTCEG score recompute
  28. 2026-06-27 12:02 UTCGHSA enrichment
  29. 2026-06-27 03:08 UTCEPSS rescore
  30. 2026-06-26 23:35 UTCEG score recompute
  31. 2026-06-26 23:35 UTCGHSA enrichment
  32. 2026-06-26 11:08 UTCEG score recompute
  33. 2026-06-26 11:08 UTCGHSA enrichment
  34. 2026-06-25 18:42 UTCEG score recompute
  35. 2026-06-25 18:42 UTCGHSA enrichment
  36. 2026-06-25 13:49 UTCEPSS rescore
  37. 2026-06-25 06:15 UTCEG score recompute
  38. 2026-06-25 06:15 UTCGHSA enrichment
  39. 2026-06-24 17:48 UTCEG score recompute
  40. 2026-06-24 17:48 UTCGHSA enrichment
  41. 2026-06-24 14:05 UTCEPSS rescore
  42. 2026-06-24 05:07 UTCEG score recompute
  43. 2026-06-24 05:06 UTCGHSA enrichment
  44. 2026-06-23 21:33 UTCEPSS rescore
  45. 2026-06-23 21:33 UTCEPSS rescore
  46. 2026-06-23 16:36 UTCEG score recompute
  47. 2026-06-23 16:36 UTCGHSA enrichment
  48. 2026-06-23 04:04 UTCEG score recompute
  49. 2026-06-23 04:04 UTCGHSA enrichment
  50. 2026-06-22 15:37 UTCEG score recompute
  51. 2026-06-22 15:37 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54100?
CVE-2026-54100 is a high vulnerability published on June 22, 2026. A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture…
When was CVE-2026-54100 disclosed?
CVE-2026-54100 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54100 actively exploited?
CVE-2026-54100 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54100?
CVE-2026-54100 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-54100?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54100, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-54100

Explore →

Is Your Infrastructure Affected by CVE-2026-54100?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs